Indent JSON for readability or minify it to one line, and get the exact line:column of any syntax error. Explore the structure with a collapsible tree view.
Pretty printing adds indentation and line breaks to make JSON easy for humans to read, while minifying strips all unnecessary whitespace and newlines to shrink file size. Pretty-printed JSON is great for debugging during development, while minified JSON reduces payload size for real API responses and production deployments. This tool lets you choose 2-space, 4-space, or tab indentation to match your project's code style.
Error messages thrown by JSON.parse() vary widely across browser engines, often making it hard to know exactly where the problem is. This tool includes its own hand-written scanner that walks the JSON grammar (objects, arrays, strings, numbers, literals) directly, so it always reports the exact same "line N, column M" regardless of which browser you're using. That makes it quick to spot common mistakes like a missing comma, an unquoted key, or an unterminated string.
Deeply nested JSON is hard to follow as plain text β it's easy to lose track of which bracket closes which. The tree view renders objects and arrays as collapsible/expandable nodes, so you can drill into just the part you care about. Clicking the copy button next to any node copies that value's path (e.g. $.tools[1]) to your clipboard, ready to paste directly into code that needs to reference it.